Aug 09, 2015 · I see a lot of people asking how to make their own NNBS fog light harness since they are part of the headlight harness. Making your own harness is helpful when either you add a 2500HD nose (like I did) when your vehicle didn’t have fogs prior, or when you don’t want to buy the whole kit (~$300-350) with painted or chrome caps.. light will hit the ground sooner and reduce the range of the light. Visual aim is made with the center of the beam hot spot 1.5 inches below the lamp center at 25 feet with the lamp facing straight forward..